Coating-applying machine



2 Sheets-Sheet 1 March 8, 1938. B. JORGENSEN COATING APPLYING MACHINE Filed Nov. 8} 1955 M m w w M O.m a M 1 a m 1w 4 m 1 M HHHHH H .H m 2 Q m 4 0 m O 4 r n0 4 n 4 g Q U a 7 p 0 4 L: Q J Q 2 March 8, 1938 B. JORGENSEN COATING APPLYING MACHINE Filed Nov. 8, 1935 2 Sheets-Sheet 2 A/VENTUR/ Patented Mar. 8, 1938 ATE COATING-APPLYIN G MACHINE- Application November 8, 1935, Serial No. 48,889

11 Claims.

My invention relates to machines by which a coating, as of latex or other adhesive material, may be applied to workpieces, it being especially concerned with such an apparatus as that disclosed in Letters Patent of the United States No.

1,981,956, Jorgensen, November 27, 1934.

An object of my invention is to increase the efiiciency and convenience in use of a machine of the character of that disclosed in the. abovementioned patent. In the attainment of this object, I deliver coating-material through a nozzle upon work being advanced upon a support by a roll, said roll acting upon the delivered material to spread it. The extent of this spreading action may be maintained within an area defined by flanges or other projections upon opposite sides of the roll. There is thus applied tothe work a body of the material sufficient to enter irregularities in the surface of an object being operated upon, yet giving a substantially uniform and regular coating. In top-cementing, a purpose for which the machine of the patent is especially designed, this allows the adhesive to reach such depressions as are produced at seams in the body of the upper or top and at the angles between said body and applied pieces, such as juniors and straps. To obtain the most advantageous relation of the nozzle to the work, I furnish means to fix said nozzle in different positions. There may be a plurality of means arranged to adjust the nozzle angularly, together with means by which it may be adjusted transversely. A lower work-supporting and -advancing roll is preferably associated with the upper advancing and spreading roll, and since some of the coating-material may fall upon it, I furnish effective means for clearing the periphery and both sides of the lower roll. To the applying means, the coating-material is delivered from a container mounted above said applying means and depending from a cov ered casing carried by the machine-frame. A conduit passes from the container through the casing to the applying means. When the casing is uncovered, the container is accessible for refilling without removal from the machine. Since the container must sometimes be taken out, as for cleaning or for change of material, a separable connection is made between it and the casing. This is of such a nature. that it will not become clogged and difficult to unmake because of an accumulation of the adhesive upon it. The arrangement illustrated herein consists of two rings, one in sections which may be applied below a flange upon the neck of the container, and this sectional ring is supported by the other ring,

which is in one piece and is engaged by means upon the casing for forcing the container-neck against a gasket and said gasket against the casing to make an air-tight joint.

In the accompanying drawings, a particular embodiment of the invention is illustrated,

Fig. 1 being a perspective view of the more essential portions of my improved applying machine;

Fig. 2 an end elevation of the applying mechanism;

Fig. 3 a front elevation thereof;

Fig. 4 a perspective view of the lower roll and the associated scraping elements, and

Fig. 5 a broken elevation of the connection between the casing and the container for the coating-material.

At the upper portion of a frame I!) is a casing l 2 of a pump, by which air-pressure is created in a second casing l4 and applied to the siu'face of a body of adhesive or other coating-material in a container 16. This container is preferably of glass, 50 it is unaffected by the material within it and permits inspection of the contents. To support the container removably, the casing 44, which is readily separable from the casing l2, has opposite pairs of lugs 18, I8, each pair having pivoted between them a clamping bolt 20. The container has about the inner portion of its neck 22 (Fig. 5) a flange 24, the inner side of which is inclined upwardly and outwardly at 26. Arranged for application to this inclined surface is the complementally-inclined surface of a two-piece ring 28, the divisions of which appear at 3B, 30. The outer periphery of the ring 28 is stepped for cooperation with the complemental inner portion of a one-piece ring 32. This ring 32 is of greater internal diameter than the periphery of the flange 24. In the ring 32 are opposite recesses 34, 34, which respectively receive the bolts 20. Assuming the container to have been removed from the. apparatus, as for cleaning or filling with a dilferent kind of coating-material than that previously employed, and to be ready to be put back on the machine, the ring 32 will be applied to the neck 22, it passing below the flange 24. Then, the sections of the ring 28 will be placed upon the ring 32 and the two raised until 28 is in engagement with the flange-surface 26. The rings may be retained in this assembled relation by two screws 35, 35 threaded into the ring 32 with their heads respectively overlapping the two sections of the ring 28. The neck of the container may now be inserted in a recess 36 at the bottom of the casing M with its upper edge in contact with a its periphery, it has projections 68.

gasket 38. When the bolts 23 are swung into the recesses 34, the nuts upon the bolts may be turned up to force the neck against the gasket and said gasket against a shoulder on the casing to furnish an air-tight joint. This supporting means is amply strong to carry the weight of the container and of the material. It will be seen that this connection is of such a character that there is nothing to become clogged by an accumulation of ad hesive, as would a screw-connection similarly employed. The opening in the neck of the container is made accessible when it is in place upon the casing I4, by providing the top of the casing with a cover 40 held down to furnish an air-tight joint by bolts 42 hinged upon lugs 44, M and engaging said cover. When the nuts are loosened, one of the bolts may be swung clear of the cover, which may then be turned about the other bolt to give access to the casing. This arrangement permits the container to be filled without removal. From a point near the bottom of the container I6, a conduit 46 leads up into and through a passage formed in the wall of the casing M, then down through a detachable portion 4'! and into the casing of a valve 48, which may be of the diaphragm type, as in the previously-mentioned patent, and similarly controlled by a. rod movable by the treadle of the apparatus. The detachable; portion is normally held in position by a spirally slotted, clamping sleeve 49. From the valve, a flexible pipe or conduit 52 delivers to the applying mechanism, which will now be described.

A work-piece T, which may be the upper or top of a tennis-shoe, the inner lower margin of which is to receive a. band i of adhesive, is introduced between lower and upper feed-rolls 54 and 56, re-

spectively, which are rotated at the same periph-- eral speed in opposite directions, as indicated by the arrows in Figs. 1 and 2. The roll 54, which may be wider than the roll 56, is fast upon the outer extremity ofa shaft 58 journaled in the. usual pivoted arm 60, this arm being springpressed upwardly. The lower roll acts both to support and to advance the work, being depressed under the control of the treadle of the apparatus to permit the application of said work. The roll 56, which distributes the adhesive over the work and presses it into small recesses or interstices of the work in addition to advancing it, is mounted to rotate with a shaft 52 journaled in the frame II] of the machine, the roll being held thereon for ready removal by a retaining member 64 urged against it by a spring 66. Over From each side of the roll 56 extends a circumferential flange 79. The two flanges and the projections give feeding contact with the work and furnish spaces in which some body of the adhesive may be held. The flanges also retain the adhesive against flowing laterally and thus limit the area coated to a definite width. This roll may be changed readily when areas of diiferent widths are to be coated. The transverse dimension of the lower roll 54 is preferably suflicient to give proper co-operation with all widths of applying rolls.

At the inner side of the roll 56, and between it and the frame of the apparatus, is an arm 12 provided with a shank I4 extending at right-angles therefrom and being received in a bore in the frame. It may be held in different angular posi tions by a set-screw I6 threaded through the frame and engaging the shank. The arm is divided, and clamped between its sections by a screw ll for angular and longitudinal adjustment is a rigid terminal-portion 18 of the coating-delivering pipe 52. At its outer extremity, the pipe-portion I8 has an enlargement 80. Set in an opening in the side of the enlargement 80 is a nozzle 82 extending toward the lower portion of the roll 56 about midway between the flanges ID, with its delivery-opening preferably of less width than the space between the roll-flanges. The two angular adjustments of the nozzle governed by the screws I6 and 1! allow for a universal adjustment of the nozzle-opening in a vertical plane, so any desired relation between it and the Work and the rollperiphery may be established. I have found an especially satisfactory location of the nozzle to be substantially that illustrated in Fig. 2 of the drawings. Here, the adhesive falls from the nozzle directly upon the work just before the roll 56 is reached. Its character and quantity are such that in contact with the surface to be coated, it will flow into irregularities at seams or the edges of applied portions to an extent diificult to obtain when the application is made by delivering to an applying member, followed by transfer therefrom to the work. The coating will itself spread to some extent laterally, but when the roll 56 is reached, this will distribute the adhesive to the extent permitted by the flanges 19, I0 and further forces it into the spaces and irregularities in the work. When the roll 56 is changed to provide for a different Width of marginal coating, 2. horizontal adjustment of the pipe 18 through the arm I2 under the control of the screw 'I'I enables the operator to establish the desired transverse relation between the nozzle and the flanges of the roll. To correctly locate the margin of the work to be coated, the customary edge-gage 84 is provided at the inner side of the rolls 54 and 56, which here are in substantially vertical alinement, this gage being adjustable toward and from said rolls by a slot-and-screw connection 86 to the arm 60.

There may be some drip or accidental flow of the adhesive from the nozzle and upper roll to the lower roll. In top-cementing, smearing of the under portion of the work is particularly undesirable because it is the finish-side. Provision is therefore made for thoroughly scraping the lower roll and for disposing of the waste-material. Removably secured upon the arm 60 by a screw 90 is a trough 92, from the bottom of which leads a discharge-pipe 94. The trough surrounds the lower portion of the roll 54 and upon a horizontal surface at its upper rear edge carries a scraper-plate 96. This scraper has its acting edges at right-angles to each other, one of these, 98, being arranged for contact across the entire periphery of the roll upon the rising side, while the other, II] I, is upon a forwardly-projecting arm I00 and engages the outer face of said roll from the periphery to a point near the center. A screw I02 passes with some lateral clearance through a slot I04 in the plate into the trough and serves to secure said plate in whatever position it may be adjusted. Against the rear edge of the plate bear the heads of two screws I06, I06, spaced from one another and threaded into the trough-wall. Near its forward extremity, the plate-arm I BI is engaged by the inner end of a screw I08 threaded through the side-wall of the trough and having a lock-nut I09. With the screw I62 loosened, the screws I06, I06 may be adjusted until the plate-edge 98 is positioned in parallelism to the periphery of the roll to act uniformly across it. The screw I08 is set to hold the edge IllI firmly against the side-of the roll. Then the screw I02 is tightened to maintain these adjustments. The inner face of the roll may be cleaned by a plate I I0 depending from a bracket H2 and inclined downwardly and inwardly to a horizontal scraping edge H4. A slot-and-screw connection I I6 secures the bracket to the arm 60, allowing adjustment for proper contact of the edge 4 with the roll. The adhesive thus removed from the roll 54 falls into the trough 92, passing therefrom through the pipe 94 to a receptacle.

In using my improved machine, the operator places a work-piece T upon the normally lowered roll 54 in a transverse position determined by the edge-gage 84'. Depression of the treadle elevates the arm 60 with the roll 54 to press the margin of the work at t against the periphery of the roll 56. The constantly rotating rolls advance the work, as the coating-material flows from the container I6 under the influence of the air-pump at I2 through the pipe 46, the valve 48 being opened simultaneously with the raising of the arm, and then from the nozzle 82 upon the work, at a point determined by the adjustments of the nozzle under the control of the screws 16 and IT, to receive the spreading action and space-filling pressure of the roll 56. The application is limited to an area of predetermined width by the roll-flanges I0. Coating-material tending to gather upon the lower roll 54 is effectively removed from all surfaces thereof by the scraping edges 98, IM and H4, which, by the adjusting means M6, I08 and I I6, can be maintained in full engagement with the periphery and both sides of the roll. When the coating operation is completed, the arm 60 and roll 54 are lowered, the valve 48 closed, and the work-piece removed from the machine. The coating-material may be introduced into the container I6 as needed by turning aside the cover 40. If, for any reason, it is desired to remove the container from the machine, it is taken out with the casing I4, and then separated from said casing, together with the retaining rings 28 and 32, by loosening the bolts 20.

Having described my invention, what I claim as new and desire to secure by Letters Patent of the United States is:

1. In a coating-applying machine, a work-support, an advancing roll having a body at opposite sides of which are projecting portions contacting with the work above the support, and a nozzle arranged to deliver coating-material to the work within the area defined by the roll-projections so that said coating-material will be acted upon by the body of the roll between said projections as the work is advanced.

2. In a coating-applying machine, a rotatable lower work-supporting and -feeding roll, a rotatable upper work-feeding and coating-spreading roll co-operating therewith, and means for delivering coating-material upon the work at the rear of the rolls, the upper roll having means cooperating with the Work to limit the spread of the coating-material applied thereto.

3. In a coating-applying machine, a worksupport, an advancing roll contacting with the work above the support and having flanges at its ends, a nozzle arranged to deliver coatingmaterial upon the work to be spread by the roll to the limit defined by said flanges as said work is advanced, and means arranged to fix the nozzle in different positions upon the machine.

port, an advancing roll having a roughened body and slightly projecting end flanges, both said body and said flanges contacting with the work above the support, a nozzle arranged to deliver coating-material upon the work to be acted upon by the roll as said work is advanced, means arranged to vary the position of the nozzle transversely of the roll, and means arranged to vary the angular relation of said nozzle to the work.

5. In a coating-applying machine, a Work-supporting roll, means for delivering coating-material above the work-supporting roll, a trough surrounding the lower portion of the roll, a plate loosely supported upon the upper edge of the trough and provided with an arm extending along the side of the roll, the plate and arm having edges for scraping engagement with the roll, and screws threaded into the trough and contacting with the edges of the plate and arm to force them toward the roll.

6. In a coating-applying machine, a work-supporting roll, means for delivering coating-material above the work-supporting roll, a trough surrounding the lower portion of the roll, a plate loosely supported upon the upper edge of the trough and provided with an arm extending along the side of the roll, the plate and arm having edges for scraping engagement with the roll, and adjusting screws threaded into the trough and contacting with the edges of the plate and arm to force them toward the roll, there being a slot-and-screw connection between the trough and plate.

7. In a coating-applying machine, a frame,

coating-applying means carried thereby, a casing mounted upon the frame above the applying means, a cover for the casing, a container depending from the casing and being accessible therethrough when the cover is raised, and a conduit passing from the container through the casing to the coating-applying means.

8. In a coating-applying machine, a frame, coating-applying means carried thereby, a casing mounted upon the frame, a container arranged to deliver to the applying means and having a flanged portion extending into the casing, a gasket interposed between the container and the casing, a retaining ring co-operating with the flange of the container, and means engaging the casing and ring to force the container against the gasket.

9. In a coating-applying machine, a frame, coating-applying means carried thereby, a casing mounted upon the frame, a container arranged to deliver to the applying means and having a flanged neck extending into the casing, a sectional ring engaging the container-flange, a one-piece ring supporting the sectional ring, and means engaging the one-piece ring to force the container-neck toward the casing.

10. In a coating-applying machine, a frame, coating-applying means carried thereby, a casing mounted upon the frame, a container arranged to deliver to the applying means and having a flanged neck extending into the casing, a gasket interposed between the container-neck and the casing, a sectional ring engaging the container-flange, a one-piece ring supporting the sectional ring, means for separably retaining the sections in place upon the one-piece ring, and means engaging the one-piece ring to force the container-neck against the gasket.

11. In a coating-applying machine, a frame, coating-applying means carried thereby, a cas- 4. Ina coating-applying machine, a work-sup-' ing mounted upon the frame, a container arranged to deliver to the applying means and having a flanged neck extending into the casing, a gasket interposed between the container-neck 1 and-the casing, a sectional ring engaging the contamer-flange, a one-piece ring supporting the BERNHARDT J ORGENSEN. 

